Platen attachment for stenciling type-writers.



L. MALZ.

PLATEN ATTACHMENT FOR STENCILING TYPE WRITERS.

APPLICATION mio :uns 9, 1909.

1,172,896. Patented Feb. 22,1916.

2 SHEETS-SHEET 1.

L. MALZ.

PLATEN ATTACHMENT FOR STENCILING TYPE WRITERS.

APPLICATION FILED IUNE9. 1909. 1,172,896. mented Feb. 22,1916.

2 SHEETS--SHEET 2.

' ti`0'rr takerf on line 3*-3 of F1g.` ,1,` Fig. a

vertical transverse section `taken `on line-- 4-4 of Fig. 1, and Figr-sw-vertical trans' `UNITED sTATEs PATENT OFFICE.

LUDWIG MALZ, 0F NEWvYORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO WALLACE ADDRESSING MACHINE COMPANY. INC., A CORPORATION 0F NEW YORK.

PLATEN ATTACHMENT FOR STENCILING TYPE-WRITERS.

Specification of Letters latent.

Patented Feb. 22, 1916'.

' Application filed June 9, 1999. Serial No. 501,107.

fore, which bending oftentimes injured their frame, so as to make their further manipulation in the addressing machines impracticable and sometimes impossible. For this purpose my invention consists of a flat stencil blank holder; and the invention consists further of a platen attachment for stenciling typewriters, comprising a holder for the stencil blank, means for lacingsaid holder in positionto receive the blank in a flat condition, andmeans for placing said holder in proper position to enable the blank to be, impressed, while in flat condition; and the invention consists lastly of certain novel Ifeatures and combination of parts, such as will be described hereinafter and finallybpointed out in the claims. y a

Referring to the drawings, Figure 1 1s a plan view of a well-known ty e-writer carriage with my improved attac` ment secured thereto, Fig. 2 is a sectional longitudinal section of my attachment take-non line 2-2 of`Fig.4 I,-ad drawn on a larger scale, showing also ,air address-stencil supported thereon, F ig. 3'isa Vertical transverse secverse section taken Online 5--i5 of Fig. 1. Similar characters of-referee indicate corresponding parts.

Referring to the zdrawings, andmore particularly to Fig. 1,. the usualetypewriter carriage -10 has guide-wheels 11 and 12, as well as a shifting-handle 13, and the platen 14 with platen-shaft 15 having an operating handle 16, all as-.well known.- The spacinghandle 17, pawlslt and 19, with spring 20, and ratchet 21, as also the spring-acttuited check-roller 22, are also well known, and

need no further description. The platen 14 is provided with a layer 51 of soft material, as cloth, felt, rubber, etc., which layer is heldin place by a clamp and thumb-screw 71. This also was well known in stenciling typewriters. Heretofore, however, it was usual to clamp av stencil-blank to and around the cylindrical platen of a typewriter, and then cause it to be stenciled by' the operation of the typewriter keys.- A stencil-blank 1s shown in cross-section in F 1g. 2, by 25, and consists as is well known of paper, surrounded by a frame 26 of card. v

board, or similar material, which blank after being stenciled is used in the addressling machines. By the bending of these frames on the usual cylindrical platen,the frames would be caused to become cracked, and so injured, that their further use in the addressing machines is impaired. l Furthermore, in case the operator made an error i the stenciiing and desired to correct it b impressing a new character over the erroneously placed one, it was almost impossible,

except in very 'few exceptional cases, and then only after painstaking efforts, to impress the correct character exactly over the erroneous one. Some efforts to obviate these disadvantages have been made but these have failed, since they were cumbersome and expensive, and did not accomplish that for which they were intended.

To provide' a machine wherein both the Naccuracy and speed of operation may be increased, I provide a sliding flat holder 30, having side-guides 31, front-guides 32 and rear-guides 33, which `surxzound a stencil blank when placed in position and hold it securely in place against shifting. This holder 3() has racks 34, engagedbyfg'earwheels 3 5 secured to the ends of the usual platen 14 and is provided at itsfrontgwith `a. recessed portion 36, to enabl'the blariks'to be, readily placed in position' and removed V.therefrom Side-parts 3'( extendupgs'ra'm'll'y,v

from the holder 30 Whichengage'guileways'38, snita'bly secured to the carriage 10.- The platen-shaft 15 is provided with a col-u lar40f provided with figures 1 to 5.011 its periphery, which is held in L"position by 9. smaller collar 42 adjustably by a screw 43; An index-plate 41 is supported. by the carriagl and serves to point to the figures on the collar by covering the remaining figures, the figures being so arranged as tok correspond to the relative positions of the holder 30, and the object of the same is to determine which part of the blank is being sten- `eiled. When the holder 30 with its blank is in a positioncorresponding to the stenciling ofthe lirst line .on the blank, the ligure 'l would appear and the remainingr figures be hid by the indeieplate 41. When this line -is finished and thespacing mechanism operated by the handle 17,'the platen is rotated and the holder .with its blank brought in 'a position cor1'esp( ii'i`(lirig to Fig. 25 and so on. After' the last' line is stenciled, the holder .3( is returned to itsintial position by one movement of the handle secured to the platen-shaft 15. The steneiled blank is then1 by' gripping it, which permissible by means of the recess 36, removed from the holder.

The outward position of the holder 'with its blank is shown clearly in i"ig. 3. and a position ready for steneilingr is shown in Fig. 4. the typewriterbar 4G with steneil-type el? being shown iii dotted lines. wliilean end View of the collar -lO with its, figures is shown in Fig. fi. Incase a eorreetio'n is necessary it may be readily niade by siinpliv returiiing: the blank to the iw-piired line. be ing. guided thereby Aby the figures on the collar and by reason ol' the flat condition ol `tht-blank and its beiner titled in (he holder. Lilie i lentieal place may be reestablislied and the correct impress inade.'

ily niy. improvements, wliieliare siinple `and veflicient, theontput :for Steneilingitypewriters'is greatly inereased.'tlie blanks willi *theiijfran'ies remain in substantially the same original and nninipaiied condition` .therebyare reryelheient in their later use in the addressing machines, and also correetions, if any, may be readily inade. which is a great advantage in the practical opera- Vtion of the niaehines.

I have shown one embodiment of my ini rentioin'but I do not wish tolie limited to .the details thereof, since changes may be niade without departing' from the spirit of the saine.

Haring thus described my invention, I claim as new and desire to secure by Letters Patent:

In an attachment foi-a typewrting inachine havin,"r a. rotatable eyliiidrieal platen, a movable blank holder adapted to move intov or from' the space. under the platen,

gear-wheels at the ends of the platen, a mow able lilank-holdn'ig fraine havingr at its ends racks adapted to be engaged by said gearwheels whereby when .said platen is rotated.

said traine is moved from under the platen, `said platen being! .adapted to engage, a blank in the blank-holdingr traine .when 'the blank is being actuated. said holder-traine comprisnrer a (lat bottoni part upon whieh the blank n ia rest and. upstaiiding flanges lorniiner side. front and rear guides for the Iilanh. the front part of sali@ holder being provided 'with-a' refe-Ss 'forf permitting the 

